【明報專訊】A bed of thorns describes a particularly difficult（特別困難的）situation or a thoroughly unhappy time. To understand the real meaning of this idiom, imagine sleeping in a bed filled with thorns（刺）from a rose! "I'm really sorry I didn't finish school. Finding time to return to school now is proving to be a bed of thorns!" "I'm going to move closer to my workplace. Commuting back and forth（上下班往返於兩地之間）each day is a bed of thorns."